Improvement in stove-pipe dampers



N. C. WHITCOMB.

'STOVEPIPE DAMPER. I No. 190,106. Patented A pril M, 1877.

WITNESSES INVENTOR ZZsmfW' 6, m M.

U ATTORNELS,

N.PETERS, PHOTO-IJTHOGRAF'MER, WASl ilNGTON. D; C,

FFIGEG NEHEMIAH O. WHITOOMB, OF OAK HILL, NEW YORK.

IMPROVEMENT IN STOVE-PIPE DAMPERS.

Specification forming part of Letters Patent No. 190,106, dated April 24, 1877 application filed March 17, 1877.

To all whom it may concern:

Be it known that I, NEHEMIAH O. WHIT- COMB, of Oak Hill, in the county of Greene and State of New York, have invented a new and valuable Improvement in Stove Pipe Dampers; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawings is a representation of a central Vertical section of my stove-pipe damper applied, and Fig. 2 is an under view thereof.

This invention relates to stove-pipe dampers; and consists in the construction and arrangement hereinafter particularly described.

In the accompanying drawing, A designates an ordinary castiron stove'pipe damper, having a channel formed across it by troughshaped guides A, arranged alternately on its opposite sides. B B designate, respectively, two metal sections, which, together, constitute the rod for operating said damper. The external ends of said sections are provided with thumbpieces U, for turning said rod, and with fixed collars or shoulders D. Theinner parts b b of said sections are correspondingly rocessed or diminished, and provided with iiiterlocking ratchets or teeth (1 on their proximate sides. E designates a spring, which is secured to said damper by its ends, so that its middle portion bears upon said sections,

holding them together. When said sections are pressed inward, collars or shoulders D bind against the outside of the stove-pipe F, holding said damper in any position to which it may be turned. Spring E is securely held by slots or riveting at one or both ends. Pieces A and rod-sections B B are prismatic in cross-section.

What I claim as new, and desire to secure by Letters Patent, is-

The combination, with a stove-damper, of two adjust-able rod-sections, provided with interlocking teeth 01 and held together by a 

